Boosting engine performance with Bose–Einstein condensation

Nathan M Myers, Francisco J Peña, Oscar Negrete, Patricio Vargas, Gabriele De Chiara, Sebastian Deffner

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)
116 Downloads (Pure)

Abstract

At low-temperatures a gas of bosons will undergo a phase transition into a quantum state of matter known as a Bose–Einstein condensate (BEC), in which a large fraction of the particles will occupy the ground state simultaneously. Here we explore the performance of an endoreversible Otto cycle operating with a harmonically confined Bose gas as the working medium. We analyze the engine operation in three regimes, with the working medium in the BEC phase, in the gas phase, and driven across the BEC transition during each cycle. We find that the unique properties of the BEC phase allow for enhanced engine performance, including increased power output and higher efficiency at maximum power.
Original languageEnglish
Article number025001
JournalNew Journal of Physics
Volume24
DOIs
Publication statusPublished - 03 Feb 2022

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